Re: Performance on inserts

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От Bruce Momjian
Тема Re: Performance on inserts
Дата
Msg-id 200010152151.RAA16188@candle.pha.pa.us
обсуждение исходный текст
Ответ на Re: Performance on inserts  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Performance on inserts  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-hackers
> > * Prevent index lookups (or index entries using partial index) on most
> >   common values; instead use sequential scan 
> 
> This behavior already exists for the most common value, and would
> exist for any additional values that we had stats for.  Don't see
> why you think a separate TODO item is needed.

You mean the optimizer already skips an index lookup for the most common
value, and instead does a sequential scan?  Seems you are way ahead of
me.


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